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A058800
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Vertically indecomposable lattices on n unlabeled nodes.
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2
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1, 1, 1, 0, 1, 2, 7, 27, 126, 664, 3954, 26190, 190754, 1514332, 12998035, 119803771, 1178740932, 12316480222, 136060611189
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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REFERENCES
| J. Heitzig and J. Reinhold, Counting finite lattices, Algebra Universalis, 48 (2002), 43-53.
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LINKS
| J. Heitzig and J. Reinhold, Counting finite lattices, preprint no. 298, Institut fuer Mathematik, Universitaet Hanover, Germany, 1999.
N. J. A. Sloane, Transforms
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CROSSREFS
| a(n+1) is Inverse INVERT transform of A006966(n+1).
Sequence in context: A036783 A150645 A060017 * A077622 A137108 A099815
Adjacent sequences: A058797 A058798 A058799 * A058801 A058802 A058803
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KEYWORD
| nonn,hard
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AUTHOR
| Christian G. Bower (bowerc(AT)usa.net), Dec 28 2000
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